{"product_id":"ntk-25657-oxygen-sensor","title":"NTK 25657 Oxygen Sensor","description":"\u003ch2\u003eOverview of NTK Direct Fit Oxygen Sensor 25657\u003c\/h2\u003e\u003cp\u003eThe NTK Direct Fit Oxygen Sensor 25657 is engineered for precise emission control in select Audi, Porsche, and Volkswagen vehicles. Designed as a heated oxygen sensor with a specific fit, it ensures accurate air-fuel mixture readings for optimal engine performance.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHeated oxygen sensor for faster response times\u003c\/li\u003e\n\u003cli\u003eSpecific fit for select Audi, Porsche, and Volkswagen models\u003c\/li\u003e\n\u003cli\u003e31.5-inch wiring harness length for convenient installation\u003c\/li\u003e\n\u003cli\u003eThreaded mounting type with 18mm thread diameter\u003c\/li\u003e\n\u003cli\u003eFour-wire configuration for reliable signal transmission\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis NTK oxygen sensor, part number 25657, belongs to the Direct Fit Oxygen Sensor line, which focuses on providing exact replacement sensors tailored to specific vehicle applications. The heated sensor type accelerates the sensor’s readiness after engine start, improving emission control efficiency. With a 31.5-inch wiring harness, it offers sufficient length for straightforward routing and connection. The sensor’s threaded mounting type with an 18mm diameter ensures secure and proper installation in the exhaust system. Featuring four wires, this sensor supports both the heating element and signal output, maintaining accurate oxygen level detection.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis oxygen sensor is compatible with a range of Audi, Porsche, and Volkswagen models, including but not limited to:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAudi A3, A4, A5, A6, A8 Quattro, and allroad variants\u003c\/li\u003e\n\u003cli\u003ePorsche Cayenne\u003c\/li\u003e\n\u003cli\u003eVolkswagen Beetle, Golf, GTI, Jetta, Passat, Passat CC, Touareg, and others\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt is designed to replace factory sensors in these vehicles to maintain proper emission control and engine management system function.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by NTK Oxygen Sensor 25657\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCheck engine light triggered by faulty oxygen sensor readings\u003c\/li\u003e\n\u003cli\u003ePoor fuel economy due to incorrect air-fuel mixture\u003c\/li\u003e\n\u003cli\u003eIncreased emissions and failed emissions tests\u003c\/li\u003e\n\u003cli\u003eEngine hesitation or rough idling caused by sensor malfunction\u003c\/li\u003e\n\u003cli\u003eReduced engine performance linked to inaccurate oxygen sensing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the NTK Direct Fit Oxygen Sensor 25657, ensure the vehicle is cooled down to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. The 31.5-inch wiring harness length provides flexibility for routing, but verify connector compatibility before installation. Thread the sensor carefully into the exhaust port to prevent cross-threading. It is recommended to check for any exhaust leaks after installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eNTK’s Direct Fit Oxygen Sensor line is manufactured to meet OEM specifications, ensuring reliable performance and durability. While specific warranty details are not provided here, NTK products typically come with a limited warranty covering defects in materials and workmanship. Refer to the product packaging or NTK’s official documentation for exact warranty terms.\u003c\/p\u003e","brand":"NTK","offers":[{"title":"Default Title","offer_id":51926782967989,"sku":"BFPZ-25657","price":108.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NO_25657_Fro.jpg?v=1775006834","url":"https:\/\/www.partcatalog.com\/products\/ntk-25657-oxygen-sensor","provider":"PartCatalog","version":"1.0","type":"link"}